Capacity and costs

Capacity is set on role and/or people performing roles. This defines the total number of hours available to work.

Percentage modelled can be set on people, roles, system and infrastructure. This is an estimation of the percentage of work that has been modelled for that node. This is used to define the capacity that has been modelled and hence the allocation of time and costs.

Costs can be set on roles, systems, people and infrastructure nodes. Costs may annual or hourly.

• Fixed costs: Is a total cost per person or per unit or just an annual cost. This is a fixed amount that is proportionally allocated to actions based on time.
• Hourly costs: Costs are calculated and allocated based on time spent doing work (actions).

This results in total costs being divided into three types:

• Allocated costs: Those costs allocated to work done within the models
• Unallocated costs: The fixed costs allocated to the remaining or unallocated capacity of a role or person.
• Unmodelled costs: The costs of the work that has not been modelled yet. This is based on the percentage modelled value on nodes.

Example

If a role node has the following:

• Percentage modelled = 50%
• Modelled hours worked (total of actions): 800 hours
• Total capacity: 2000 hours
• Annual cost: $100,000
• Hourly cost: $10 per hour

This results in the following:

    Modelled capacity

            percentage modelled * total capacity

            50% * 2000 hours = 1000 hours

    Unmodelled capacity

            Total capacity – modelled capacity

            2000 hours - 1000 hours = 1000 hours

    Remaining capacity

             Total capacity – hours worked

             1000 hours - 800 hours = 200 hours

    Unmodelled costs

            (percentage modelled * annual cost) + (unmodelled capacity * hourly cost)

            (50% * $100,000) + (1000 hours * $10) = $60,000

    Allocated costs

             (Annual costs * Hours worked/total capacity) + (hourly cost * hours worked)

             ($100,000 * 800/2000) + ($10 * 800) = $48,000

    Unallocated costs

              (Annual costs * remaining capacity/total capacity) + (hourly costs * remaining capacity)

              ($100,000 * 200/2000) + ($10 * 200) = $12,000